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AFLP Analysis of Gene Pools for a Wild Bean Core Collection

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Title AFLP Analysis of Gene Pools for a Wild Bean Core Collection
 
Creator Tohme, Joe
González, D. Orlando
Beebe, Stephen E.
Duque, Myrian C.
 
Description CIAT- Outstanding Research Publication Award (ORPA) - 1997
Studies of diversity permit conclusions about the genetic structure of species. Systematically developed core collections are a particularly good tool for such purposes. The objective of this study was to evaluate the genetic structure between and within gene pools of a core collection of wild Phaseolus vulgaris L. using the technique of amplified restriction polymorphism (AFLP) analysis. DNA fingerprint patterns of 114 genotypes were analyzed by the NTSYS program. Major groups or gene pools were recognized in Mesoamerica, Colombia, the northern Andes of Ecuador and northern Peru, and the southern Andes, although the separation among gene pools was not wide. A unique segment of germplasm from northern Peru showed greater genetic distance than the other gene pools. Although most Mexican wild beans formed a rather homogenous group, a small number of accessions clustered with the Andean gene pool, and accessions from Guatemala tended to cluster apart from Mexican accessions. In the southern Andean gene pool, more discrete groups were formed which were associated with certain regions such as Argentina, possibly reflecting greater geographic and genetic isolation. Colombian accessions appeared to be highly introgressed with germplasm from other areas. AFLP analysis produced a large amount of data in a short period, thus permitting greater insights into the genetic structure of wild beans than had been possible with other methods of analysis.
Peer Review
 
Date 2019-10-08T16:49:40Z
2019-10-08T16:49:40Z
1997
 
Type Journal Article
 
Identifier Tohme, Joe; González, D.Orlando; Beebe, Stephen; Duque, Myrian C. (1997). AFLP Analysis of Gene Pools for a Wild Bean Core Collection. Crop Sciences. 36(5): 1375-1384
https://hdl.handle.net/10568/103995
 
Language en
 
Rights Other
 
Format 36 (5): 1375-1384
 
Publisher American Society of Agronomy
 
Source Crop Sciences